upper side of midtown east?

Any suggestions for upper side of midtown east? I'm thinking of possibly The Modern love the bar there but never had dinner or possibly is it Convivio? - Sister is coming for one night from out of town and will have meeting that part of town - I'd like to meet her and take her to dinner but I really don't know that area - any suggestions?

I'm a bit confused by your designation of places on the upper side of midtown east, since you mention the Modern, which is in the west fifties and Convivio which- being in Tudor City- is smack in the middle of midtown east. Also it might be good to give us some idea of food preferences and price range.

sorry the problem is that i'm not exactly sure of where her meeting is - l believe it's around 56 and third ave. price and cuisine are very open - but probably in the price range of Convivio and The Modern - she doesn't get in the city much and it's her birthday no kids, no spouses = it will be a special brother/sister meal.